A Day of Visiting

Today little Frederick and his mother visited a school and a family. While they were there, they saw a band, checked out the litter, and noticed a sleuth standing nearby. Later that day, they watched an army and a troop for quite a while, and noticed they were standing beside a battery. As they were leaving to go home that day, Frederick and his mother saw a party just near the den and were indeed very happy.

What was happening here?

Answer

Frederick and his mother were at the zoo.

'school' of whales
'family' of otters
'band' of gorillas
'litter' of puppies
'sleuth' of bears
'army' of herrings
'troop' of dogfish
'battery' of barracuda
'party' of rainbow fish
'den' of snakesHide